Abstract

This report presents the results of investigation related to the estimation of stability and control derivatives of LCRA from the flight data generated during Sept-Oct 2000 (flight no. 373 to 386) for LER-UAV project. The maximum likelihood estimation, based on output error minimization technique is used to estimate the derivatives from the aircraft response data. The preliminary exercise of model validation is carried out. The recommendations to carry out further model validation using a flight simulator before accepting the final set of derivatives are given.